Cruz asked Johnson if testimony by DHS whistleblower Philip Haney about the references being scrubbed was accurate. When Johnson said that he had no idea, Cruz pressed him, and Johnson said that Cruz's questioning was "very interesting" and made for "good political debate."

Cruz then shot back that Johnson was "entitled to give speeches other times."

He then accused the Obama Administration of ignoring "red flags of radical Islamic terrorism" and of a "willful blindness."

“What concerns me, and I believe should concern the Department of Homeland Security, is that because of this effort - scrubbing your law enforcement materials of any acknowledgment of radical Islamic terrorism - when you see the red flags of radical Islamic terrorism, you do not follow up on them effectively. And we have terrorist attack, after terrorist attack, after terrorist attack that could have been prevented but for this Administration’s willful blindness.”

Watch the testy exchange above, plus a fiery Kelly File debate between Tucker Carlson and Robert Zimmerman over the politics of "radical Islam" below.

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